Improvement in gas-regulators



J. R. HALL.

GAS-REGULATOR.

Patented May 28,1876.

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N, PETERS. PHOTO NITED STATES IMPROVEMENT IN GAS-REGULATORS.

Specification forming part of Letters Patent No. 177,634, dated May 23, 1876; application filed April 22, 1876.

To all whom it may concern:

Be it known that I, JOHN R. HALL, of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement'iu Gas-Regulators and I do hereby declare the following to be a clear and exact description of the nature thereof, sufiicient to enable others skilled in the art to which myinvention appertains to fully understand, make, and-use the same, reference being had to the accompanying drawings, making part of this specification, in which- Figure l is a side elevation of the regulatorembodying my invention. Fig. 2 is a central vertical section thereof. Fig. 3 is a central vertical section of a portion at right angles to Fig. 2. p

Similar letters of reference indicate corresponding parts in the several figures.

My invention has for its object the regulation or control of the flow of gas, whereby the light will be'unit'orm and steady, and brilliant, without glare.

The invention consists of a sh ell having two chambers, each chamber being of a uniform diameter to near the point of junction of the two chambers, at which point each chamber converges toward the center, the uniformity of the diameter of each chamber preventing irregular expansion of the gas, and consequently insuring a steady light. It'also consists of two or more valves having a common motion, which are adjustable relatively to each other, and to the seats with which they operate. It also consists in adjusting the tension of the spring of the valve or valves by means adapted to be operated outside of the shell.

Referring to the drawings, A represents the shell of the regulator, and it is formed into two chambers, A A. Within the lower chamber- A, at or near the bottom thereof,

there is screwed or otherwise secured a valveseat, B, from which rises a stem, 0, on which is fitted a sliding collar, D, to whose upper and lower ends are secured valves E E, the stem 0 being adjustably fitted to the valve seat, and the lower valve E being adjustably fitted to the collar D. Each chamber is of uniform diameter, as at a a, to near the point of junction of .the two chambers, at which point they converge or extend inwardly, as at F, so as to form what may be termed the seat of the upper valve E.

On the stem 0 there is placed a spring, G

which is fitted between the upper valve E and a shoulder or stop on the stem, and the upper end of said stem is bifurcated for the recep-.

journaled in the walls of the upper chamber A", and its headK is on the outside of the shell, whereby the cam may be rotated, and the valve or valves adjusted from the outside.

The gas, under ordinary pressure, enters the chamber A through the small space between the valve E and seat B, and reaches the chamber A through the small space between the valve E and seat F. Should the pressure increase the valves act as a check thereto, but they yield gradually, whereby the gas will not leave the chambers with a rush and aft'ectthe light. v V

The spring G may be adjusted relatively to the predetermined pressure of the gas by properly screwing the stem 0, or by properly rotating thelower valve 011 the collar, so as to raise or lower' the upper valve. The spaee'to be allowed between the two valves, or between the valves and their seats, may be regulated by rotating the collar D or the lower valve E, whereby the valves may be separated to a greater or less extent.

When the adjustment of the parts is complete, and the regulator is attached to the service-pipe, further adjustment, occasioned by subsequent change in the pressure of the gas, may be accomplished from the outside of the shell by means of thecam H, the head K of which is readily accessible. By turning the head, and consequently rotating the cam, the face of the latter will cause greater or less compression of the spring G, thus increasing or decreasing the .power thereof, and correspondingly controlling the valve or valves.

Instead of the cam or eccentric H, I may use a worm and worm-wheel, rack and pinion,

wedge-shaped bar, or other device, in order to control the spring G; but in either case the operation is to be from the outside.

Having thus described my invention, what- 3. The valves E E, connected together to have common motions, and adjustable relatively to each other and to their seats, substantially' as and for the purpose set forth.

4:. The valves E E, in combination with the screw-collar D, substantially as and for the purpose set forth.

5. The valve or valves, in combination with the spring G, which is adjustable from the outside of the shell, substantially as and for the purpose set forth.

. J NO. R. HALL.

Witnesses:

JOHN A. WIEDERSHEIM, H. E. HINDMARSH. 

